CN201869024U - Ventilation structure of permanent magnet generator - Google Patents
Ventilation structure of permanent magnet generator Download PDFInfo
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- CN201869024U CN201869024U CN2010206339810U CN201020633981U CN201869024U CN 201869024 U CN201869024 U CN 201869024U CN 2010206339810 U CN2010206339810 U CN 2010206339810U CN 201020633981 U CN201020633981 U CN 201020633981U CN 201869024 U CN201869024 U CN 201869024U
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Abstract
The utility model discloses a ventilation structure of a permanent magnet generator, which relates to the technical field of permanent magnet generators, and comprises a cooler arranged above a generator and a forced ventilation centrifugal fan provided for the cooler. A plurality of air inlet areas and air outlet areas are alternately arranged at the back of a stator core of the generator along the axial direction, and are uniformly distributed along the radial circumference of the generator; the air inlet areas are open at the air inlet end of the centrifugal fan and are closed at the air outlet end of the centrifugal fan; the air outlet areas are open at the air outlet end of the centrifugal fan and are closed at the air inlet end of the centrifugal fan; a plurality of stator ventilating ducts are arranged in the stator core and distributed along the radial direction of the generator; and a plurality of rotor ventilating ducts are arranged in a rotor core and distributed along the radial direction of the generator. With the ventilation structure, the air quantity distribution and the temperature distribution of a stator and a rotor of the generator can be more reasonable, so that the generator can be prevented from being uneven in cooling and overheated locally, therefore, a permanent magnet of the permanent magnet generator can be guaranteed to work normally.
Description
Technical field
The utility model relates to the magneto technical field, exactly relates to a kind of ventilation cooling structure of high-speed permanent magnetic generator.
Background technology
Wind-driven generator is installed in usually apart from the higher cabin, ground, and the ambient temperature height is added reasons such as heat radiation is not smooth and caused motor component to break down easily, very inconvenience of maintenance of motor and maintenance.Particularly be positioned at the wind turbine generator in coastal waters, its reliability requirement for heat radiation is higher.
In addition, permanent magnetic material is to the temperature anomaly sensitivity, the too high reduction that will cause permanent magnetic material performance of temperature, even irreversible degaussing appears.Can improve electromagnetic load and strengthen the motor cooling capacity, reduce the volume and weight of generator, reduce cost.Therefore, the temperature rise calculating of permanent magnet synchronous wind generator and cooling system appropriate design are extremely important.
The cooling of such motor at present mainly is by absolutely empty or air water cooling but.The motor internal coolant is an air.Mainly contain the radial ventilation cooling, axial ventilation cooling and three kinds of types of cooling of mixed ventilation cooling.Concrete draft type forms interior wind path circulation and the circulation of outer wind path, increases externally ventilated machine, the form that forced ventilation or both combine for carrying coaxial fan.Above-mentioned several draft type can cooling motor, but all has inhomogeneous cooling, even the situation of local overheating occurs, for guaranteeing the permanent magnet operate as normal of magneto, just need make great efforts to improve wind path it is heated evenly, and effectively cools off.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of ventilation cooling structure of permanent magnet generator, it is more reasonable that the utility model can make the stator and rotor air quantity of generator distribute to, motor stator and rotor Temperature Distribution more evenly, rationally, thereby avoid motor inhomogeneous cooling to occur, the local overheating situation takes place, and guarantees the operate as normal of permanent magnet of permanent magnet motor effectively.
The utility model is realized by adopting following technical proposals:
A kind of permanent magnet generator aeration structure, it is characterized in that: be included in the cooler of motor top setting and the forced ventilation centrifugal blower that cooler carries, stator core back at motor axially has been arranged alternately a plurality of air intakes district and wind outlet area, air intake district and wind outlet area evenly distribute along the motor radial circumference, wherein, the air intake district is opened wide at the air intake of centrifugal blower, in the outlet air end sealing of centrifugal blower; Wind outlet area opens wide at the outlet air end of centrifugal blower, in the air intake sealing of centrifugal blower.
In stator core, be provided with a plurality of along motor radial direction distribution stator ventilation ducts, the same rotor ventilation ditches that in rotor core, also are provided with a plurality of along the distribution of motor radial direction, the stator ventilation ducts is identical with the number of rotor ventilation ditch, and each stator ventilation ducts and each rotor ventilation ditch aligned in position, along the motor axial direction, the height of stator ventilation ducts is greater than the height of rotor ventilation ditch, with reasonable distribution stator and rotor cooling air quantity.。
The number of described air intake district and wind outlet area all is 12.
The height of described stator ventilation ducts is 10mm.
The height of described rotor ventilation ditch is 5mm.
Described cooler is sky-water cooler.
Compared with prior art, the beneficial effect that the utility model reached is as follows:
1, in the utility model, employing axially has been arranged alternately a plurality of air intakes district and wind outlet area at the stator core back of motor, air intake district and wind outlet area evenly distribute along the motor circumferencial direction, and described air intake district is opened wide at the air intake of centrifugal blower, in the outlet air end sealing of centrifugal blower; Described wind outlet area opens wide at the outlet air end of centrifugal blower, in the air intake sealing of centrifugal blower.Such structure can make stator, rotor axial Uniform Ventilation, air quantity distribute rationally; In stator core, be provided with a plurality of along the uniform stator ventilation ducts of motor circumferencial direction, in rotor core, be provided with a plurality of along the uniform rotor ventilation ditch of motor circumferencial direction, such structure can make stator, rotor Uniform Ventilation diametrically, and it is more reasonable that air quantity distributes; And with the height of stator ventilation ducts greater than the rotor ventilation ditch, be in order to satisfy the flow through air quantity of air quantity of flowing through of stator ventilation ducts much larger than the rotor ventilation ditch, guaranteed that further air quantity distributes rationally, and air intake district and wind outlet area to be arranged alternately also be in order further to make air quantity distribute more rationally evenly, the motor cooling is more even.After adopting said structure, can make the stator and rotor air quantity distribution of generator more reasonable, motor stator and rotor Temperature Distribution is more reasonable, thereby avoid occurring uneven in temperature, the situation of local overheating takes place, guaranteed the operate as normal of permanent magnet of permanent magnet motor effectively, this structure embodiment is simple simultaneously, can't increase motor cost.
2, in the utility model, the air intake district that adopts and the number of wind outlet area all are 12, the height of stator ventilation ducts is 10mm, the height of rotor ventilation ditch is 5mm, cooler is sky-water cooler, such frame mode can guarantee further that the utility model can be applicable to the ventilation cooling of high-speed permanent magnetic generator, and ventilation effect is better.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is generator inner air circulating path figure
Fig. 2 is a rough package drawing of the present utility model
Fig. 3 is a B portion enlarged drawing among Fig. 2
Fig. 4 is an A-A cutaway view among Fig. 2
Mark among the figure:
1, centrifugal blower, 2, the air intake district, 3, wind outlet area, 4, the stator core back, 5, the axial gusset of out frame, 6, air intake, 7, outlet air end, 8, stator core, 9, rotor core, 10, the stator ventilation ducts, 11, rotor ventilation ditch, 12, air gap, 13, fan blade, 14, axle.
Embodiment
Embodiment 1
The utility model discloses a kind of permanent magnet generator aeration structure, be included in the cooler of motor top setting and the forced ventilation centrifugal blower 1 that cooler carries, a plurality of air intakes district 2 and wind outlet area 3 axially have been arranged alternately at the stator core back 4 of motor, air intake district 2 and wind outlet area 3 evenly distribute along the motor radial circumference, wherein, described air intake district 2 is opened wide at the air intake 6 of centrifugal blower 1, in outlet air end 7 sealings of centrifugal blower 1; Described wind outlet area 3 opens wide at the outlet air end 7 of centrifugal blower 1, in air intake 6 sealings of centrifugal blower 1; In stator core 8, be provided with a plurality of along motor radial direction distribution stator ventilation ducts 10, the same rotor ventilation ditches 11 that in rotor core 9, also are provided with a plurality of along the distribution of motor radial direction, stator ventilation ducts 10 is identical with the number of rotor ventilation ditch 11, and each stator ventilation ducts 10 and each rotor ventilation ditch 11 aligned in position, along the motor axial direction, the height of stator ventilation ducts 10 is greater than the height of rotor ventilation ditch 11, with reasonable distribution stator and rotor cooling air quantity.
Embodiment 2
As a preferred forms of the present utility model, the number of air intake of the present utility model district 2 and wind outlet area 3 all is 12.The height of described stator ventilation ducts 10 is 10mm.The height of described rotor ventilation ditch 11 is 5mm.Described cooler is sky-water cooler.All the other are with embodiment 1, and such version is particularly useful for the ventilation cooling of high-speed permanent magnetic generator, and ventilation effect is better.
Embodiment 3
As an embodiment of the present utility model: this generator has adopted axially, radially mixed ventilation structure.The pressure that the drive motors inner air flows is mainly by centrifugal high pressure fan 1, the common generation of rotor fan blade and rotor rotation itself, but topmost air flows pressure is from centrifugal blower 1, and electronics inner air circulating path is as shown in Figure 1.
(1) respectively is furnished with several highly different ventilation ductss on the stator and rotor cores, wherein stator wind ditch height is 10mm, rotor wind ditch height is 5mm, stator and rotor ventilation ducts 11 quantity equate, stator ventilation ducts 10 is flowed through air quantity greater than rotor ventilation ditch 11 air quantity of flowing through, so choose stator ventilation ducts 10 height greater than rotor ventilation ditch 11 height, as Fig. 3.
(2) stator core back air intake district 2 and wind outlet area 3 are respectively 12, arranged alternate, and the axial end sealing in wind district, the other end opens wide, and the air intake ditch opens wide at air intake 6, outlet air end 7 sealings; The air-out ditch is in air intake 6 sealing, and outlet air end 7 opens wide, and can realize that the stator core back advances wind outlet area 3 and circumferentially alternately arrange, it is more reasonable that this draft type makes that the stator and rotor air quantity distributes, the motor cooling is more even, and motor stator and rotor Temperature Distribution is more reasonable simultaneously, as Fig. 4.
12 air intake districts and 12 wind outlet areas are formed at interval by 24 axial gussets 5 of out frame.
This scheme principal security the even cooling of motor, effectively guaranteed the performance of permanent magnet, the structure embodiment is simple simultaneously, can not increase cost.
Claims (5)
1. permanent magnet generator aeration structure, it is characterized in that: be included in the cooler of motor top setting and the forced ventilation centrifugal blower (1) that cooler carries, a plurality of air intakes district (2) and wind outlet area (3) axially have been arranged alternately at the stator core back (4) of motor, air intake district (2) and wind outlet area (3) evenly distribute along the motor radial circumference, wherein, described air intake district (2) is opened wide at the air intake (6) of centrifugal blower (1), outlet air end (7) sealing in centrifugal blower (1); Described wind outlet area (3) opens wide at the outlet air end (7) of centrifugal blower (1), air intake (6) sealing in centrifugal blower (1);
In stator core (8), be provided with a plurality of along motor radial direction distribution stator ventilation ducts (10), in rotor core (9), be provided with a plurality of rotor ventilation ditches (11) that distribute along the motor radial direction, stator ventilation ducts (10) is identical with the number of rotor ventilation ditch (11), and each stator ventilation ducts (10) and each rotor ventilation ditch (11) are corresponding to be provided with, along the motor axial direction, the height of stator ventilation ducts (10) is greater than the height of rotor ventilation ditch (11).
2. permanent magnet generator aeration structure according to claim 1 is characterized in that: the number of described air intake district (2) and wind outlet area (3) all is 12.
3. permanent magnet generator aeration structure according to claim 1 and 2 is characterized in that: the height of described stator ventilation ducts (10) is 10mm.
4. permanent magnet generator aeration structure according to claim 3 is characterized in that: the height of described rotor ventilation ditch (11) is 5mm.
5. permanent magnet generator aeration structure according to claim 1 is characterized in that: described cooler is sky-water cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206339810U CN201869024U (en) | 2010-11-30 | 2010-11-30 | Ventilation structure of permanent magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206339810U CN201869024U (en) | 2010-11-30 | 2010-11-30 | Ventilation structure of permanent magnet generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201869024U true CN201869024U (en) | 2011-06-15 |
Family
ID=44140167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206339810U Expired - Lifetime CN201869024U (en) | 2010-11-30 | 2010-11-30 | Ventilation structure of permanent magnet generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201869024U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545462A (en) * | 2011-11-30 | 2012-07-04 | 西安久和能源科技有限公司 | Megawatt-level air-water-cooling high speed permanent magnet generator |
| CN102611222A (en) * | 2012-02-22 | 2012-07-25 | 北京交通大学 | Motor ventilating system with gear type wind mixing structure |
| CN102969835A (en) * | 2012-12-14 | 2013-03-13 | 哈尔滨电气动力装备有限公司 | Main cooling agent pump motor of second-generation nuclear power plant |
| CN109728668A (en) * | 2018-12-19 | 2019-05-07 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of ventilation cooling structure of rotor |
| CN110460180A (en) * | 2019-08-30 | 2019-11-15 | 东方电气集团东方电机有限公司 | A method of for improving stator shaft orientation temperature distribution evenness |
| CN114142637A (en) * | 2021-11-26 | 2022-03-04 | 卧龙电气南阳防爆集团股份有限公司 | Megawatt high-power high-speed motor wind path structure |
-
2010
- 2010-11-30 CN CN2010206339810U patent/CN201869024U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545462A (en) * | 2011-11-30 | 2012-07-04 | 西安久和能源科技有限公司 | Megawatt-level air-water-cooling high speed permanent magnet generator |
| CN102611222A (en) * | 2012-02-22 | 2012-07-25 | 北京交通大学 | Motor ventilating system with gear type wind mixing structure |
| CN102611222B (en) * | 2012-02-22 | 2014-10-29 | 北京交通大学 | Motor ventilating system with gear type wind mixing structure |
| CN102969835A (en) * | 2012-12-14 | 2013-03-13 | 哈尔滨电气动力装备有限公司 | Main cooling agent pump motor of second-generation nuclear power plant |
| CN109728668A (en) * | 2018-12-19 | 2019-05-07 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of ventilation cooling structure of rotor |
| CN110460180A (en) * | 2019-08-30 | 2019-11-15 | 东方电气集团东方电机有限公司 | A method of for improving stator shaft orientation temperature distribution evenness |
| CN110460180B (en) * | 2019-08-30 | 2020-11-03 | 东方电气集团东方电机有限公司 | Method for improving axial temperature distribution uniformity of stator |
| CN114142637A (en) * | 2021-11-26 | 2022-03-04 | 卧龙电气南阳防爆集团股份有限公司 | Megawatt high-power high-speed motor wind path structure |
| CN114142637B (en) * | 2021-11-26 | 2024-04-12 | 卧龙电气南阳防爆集团股份有限公司 | Megawatt high-power high-speed motor wind path structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |